When I use functions such as Printout3D or Export to export 3D graphics to stl or dxf formats, the exported geometric objects are automatically triangulated even thought the original objects (like cubes) have no triangles. Is there any way to avoid this automatic triangulation that generates wrong 3D objects when printed or milled?
Commands I use are like
Show[g1 = Graphics3D[Polygon /@ facets1]]
Printout3D[g1, "zono12.stl", TargetUnits -> "Centimeters", RegionSize -> Quantity[8, "Millimeters"]]
Export["zono12.dxf", g1, "DXF"]
The graphic object g1 is a polyhedron without triangular faces, but the output zono12.stl and zono12.dxf are both triangulated, unfortunately.
Any option to avoid the triangulation?
Thanks in advance for your help, Komei Fukuda
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